|
| January 28, 2005 |
| |
Radiological Findings and Clinical Results of 102 Thrust-Plate
Femoral Hip Prostheses: A Follow-up of 2 to 8 Years
- Journal of Arthroplasty |
|
We report the
radiological and clinical outcome of 102 consecutive femoral hip
arthroplasty we prospectively followed up in 84 patients using the third
generation of the thrust-plate prosthesis with a mean period of
follow-up of 58 (range, 26-100) months. Four implants were revised: 2
because of an infection and 2 because of aseptic loosening. The
thrust-plate prosthesis, which allows preservation of part of the
femoral neck, was used in younger patients, 80% were younger than 60
years... |
| |
Imaging Findings of Kimura's Disease in the Soft Tissue of the
Upper Extremity -
American Journal of Roentgenology |
|
|
Conclusions: Kimura's
disease should be considered as a possible diagnosis when a partially or
poorly defined subcutaneous mass of high signal intensity on T1- and
T2-weighted images with homogeneous enhancement, surrounding
subcutaneous edema, and internal flow voids is seen in the medial
epitrochlear region in an Asian person, especially if accompanied by
peripheral eosinophilia... |
| |
The "Floating" Meniscus: MRI in Knee Trauma and Implications for
Surgery -
American Journal of Roentgenology |
|
|
Conclusions: The
presence of a floating meniscus on MRI is a result of significant trauma
to the knee leading to meniscal avulsion and is often associated with
significant ligamentous injury. Alerting the surgeon to the presence of
a meniscal avulsion facilitates appropriate surgical planning with
meniscal reattachment to the tibial plateau... |
| |
Observer Variation in MRI Evaluation of Patients Suspected of
Lumbar Disk Herniation -
American Journal of Roentgenology |
|
|
Conclusion: On average,
more than 50% of interobserver variation in MRI evaluation of patients
with lumbosacral radicular pain is caused by disagreement on bulging
disks. Knowledge of clinical information does not influence the
detection of herniations but lowers the threshold for reporting bulging
disks... |
| January 27, 2005 |
| |
Magnetic resonance imaging in osteomalacic insufficiency
fractures of the pelvis
- Clinical Radiology |
|
|
Follow-up MR
examinations of 2 subjects showed that abnormal signal intensity had
disappeared after appropriate treatment...Conclusion: The results of
this study showed that the iliac and sacral bones are frequently
involved in patients with OM. MRI can determine the clinical activity of
the disease, and can monitor the response to treatment of the active
type of insufficiency fractures... |
|
| January 26, 2005 |
| |
Chondroblastoma Metastasis to Lung Visualized on Bone Scan
- Clinical Nuclear Medicine |
|
|
A 52-year-old female
patient with multiple recurrences of chondroblastoma involving the right
femur presented with worsening pain and swelling above her right knee.
The patient had previously undergone multiple curettages and resections
of the involved femur as well as a thoracotomy and resection of
pulmonary metastases... |
| |
Retinoid Induced Ossification of the Interosseous Membrane of
the Leg -
Clinical Nuclear Medicine |
|
|
A 38-year-old male
marathon runner presented with left leg pain after increasing his level
of training. The pain increased over a period of 5 months. At this time,
a plain x-ray showed periosteal new bone formation at the lateral edge
of the left tibia. Bone scintigraphy showed increased uptake at the same
site, and a diagnosis of stress fracture was made... |
| |
Evaluation of Shoulder Integrity in Space: First Report of
Musculoskeletal US on the International Space Station
- Radiology
|
|
|
Investigative
procedures were approved by Henry Ford Human Investigation Committee and
NASA Johnson Space Center Committee for Protection of Human Subjects.
Informed consent was obtained. Authors evaluated ability of nonphysician
crewmember to obtain diagnostic-quality musculoskeletal ultrasonographic
(US) data of the shoulder by following a just-in-time training algorithm
and using real-time remote guidance aboard the International Space
Station (ISS)... |
| January 25, 2005 |
| |
Reliability and Reproducibility of Radiographs of Greater
Tuberosity Displacement
- Journal of Bone and Joint Surgery |
|
|
To our knowledge, we
are the first to examine the accuracy and reliability of interpreting
images of known displacements of the greater tuberosity. Multiple
radiographic views are needed to evaluate displacement of the greater
tuberosity appropriately. The anteroposterior view in external rotation
can profile the greater tuberosity and help demonstrate small
displacements. Treatment decisions should be consistent between surgeons
when multiple views are used... |
| |
Age-Adjusted Baseline Data for Women with Hallux Valgus
Undergoing Corrective Surgery
- Journal of Bone and Joint Surgery |
|
|
Conclusions: The bodily
pain score from the SF-36 appears to be a sensitive measure of problems
experienced by patients undergoing bunion surgery. Surprisingly, the
severity of the deformity as measured radiographically did not correlate
with any of the fifteen scores measured. These data may serve as a
baseline for clinical hallux valgus studies with use of the SF-36 or the
AAOS outcomes questionnaire... |
|
| |
MRI of the axial skeleton manifestations of ankylosing
spondylitis -
Clinical Radiology |
|
|
It is believed that the
second to tenth ribs, by articulating with the disc, have less
mechanical trauma to the CV joints.2 The first and lower thoracic joints
tend to be involved with increased frequency in AS. These two cases well
illustrate the fact that CV arthropathy can be severe in AS and, if the
disease defining sacroiliitis was mild and undiagnosed (as in our first
case), it may appear to the radiologist as the presenting and indeed
only manifestation if the SI joints have not been imaged...
|
| |
Applications of Ultrasound in Arthritis
- Seminars in Musculoskeletal Radiology |
|
|
The current article
demonstrates some of the common sonographic features of the major
arthritides. In rheumatoid arthritis, sonography shows the primary
intra-articular location of the joint synovitis and bone erosion as well
as any associated tenosynovitis. In early disease, this distribution can
be distinguished from that of the spondyloarthropathies, in which the
changes are typically centered on the entheses... |
|
| January 24, 2005 |
| |
Use of novel interactive input devices for segmentation of
articular cartilage from magnetic resonance images
- Osteoarthritis and Cartilage |
|
|
We found no difference
in consistency or precision of cartilage volume, mean thickness or
surface area between the three input devices tested...Conclusions: We
conclude that measurements of cartilage made using articular cartilage
segmentation from MR images are independent of the input device chosen
for user interaction... |
| January 21, 2005 |
| |
Surgery versus conservative therapy for carpal tunnel syndrome:
methodology of a randomized clinical trial
- BMC Musculoskeletal Disorders |
|
|
Conservative treatment
remains the standard of care for treating mild to moderate carpal tunnel
syndrome despite a small number of well-controlled studies and limited
objective evidence to support current treatment options. There is an
increasing interest in the usefulness that wrist magnetic resonance
imaging could play in predicting who will benefit for various
treatments... |
| January 20, 2005 |
| |
Lessons learnt from the painful shoulder; a case series of
malignant shoulder girdle tumours misdiagnosed as frozen shoulder
- BMC Medical Imaging |
|
|
Adhesive capsulitis or
frozen shoulder is a common condition characterized by shoulder pain and
stiffness. In patients in whom conservative measures have failed, more
invasive interventions such as arthrographic or arthroscopic distension
can be very effective in relieving symptoms and improving range of
movement. However, absolute contraindications to these procedures
include the presence of neoplasia around the shoulder girdle...
|
| January 19, 2005 |
| |
High-resolution optical coherence tomographic imaging of
osteoarthritic cartilage during open knee surgery
- Arthritis Research & Therapy |
|
|
This study demonstrates
the first real-time imaging in vivo of human cartilage in normal and
osteoarthritic knee joints at a resolution of micrometers, using optical
coherence tomography (OCT). This recently developed high-resolution
imaging technology is analogous to B-mode ultrasound except that it uses
infrared light rather than sound... |
| |
Magnetic Resonance Microscopic Images with 50-mm Field-of-View
of the Medial Aspect of the Knee
- Acta Radiologica |
|
|
MR microscopy
delineated tiny cleavages in cases with meniscal tears. The mean values
of qualitative evaluation of the MR microscopy were significantly higher
than those of the routine imaging...Conclusion: High-resolution imaging
delineated fine structures of the medial aspect of the knee...
|
|
| |
Multidetector Computed Tomography of Cervical Spine Fractures in
Ankylosing Spondylitis -
Acta Radiologica |
|
|
Conclusion: MDCT is
superior to plain radiographs or MRI, showing significantly more
injuries and yielding more information on fracture morphology. MRI is
valuable, however, in evaluating the spinal cord and soft-tissue
injuries. Fractures in advanced AS often show an abnormal orientation
and are frequently associated with spinal cord injuries... |
|
| January 18, 2005 |
| |
Osteoarthritis and the postmenopausal woman: Epidemiological,
magnetic resonance imaging, and radiological findings
- Seminars in Arthritis and Rheumatism |
|
|
Conclusions: There is
weak epidemiological evidence suggesting a role for estrogen therapy in
joint health in postmenopausal women. The data are more suggestive of an
effect on large joint OA than small joint OA... |
| |
Imaging of Intraarticular Masses
- Radiographics |
|
|
Intraarticular masses
can be classified as noninfectious synovial proliferative processes
(lipoma arborescens, synovial osteochondromatosis, pigmented
villonodular synovitis, rheumatoid arthritis), infectious granulomatous
diseases (tuberculous arthritis, coccidioidomycosis arthritis),
deposition diseases (gout, amyloid arthropathy), vascular malformations
(synovial hemangioma, arteriovenous malformations), malignancies
(synovial chondrosarcoma, synovial sarcoma, synovial metastases), and
miscellaneous (cyclops lesion)... |
| January 17, 2005 |
| |
Serum hyaluronan levels and radiographic knee and hip
osteoarthritis in African Americans and Caucasians in the Johnston
County Osteoarthritis Project
- Arthritis & Rheumatism |
|
|
Conclusion: These
cross-sectional data support a role for serum HA as a biomarker of
radiographic OA. The variations in levels of serum HA attributable to
ethnicity, sex, and age were not explained by radiographic OA, BMI, or
comorbidities. The lack of strong confounding between serum HA and
comorbidities further supports a role for serum HA as a potential
biomarker... |
| January 14, 2005 |
| |
Radiographic Anomalies That May Alter Chiropractic Intervention
Strategies Found in a New Zealand Population
- Journal of Manipulative and Physiological Therapeutics
|
|
|
Conclusion: A large
percentage of patients presenting for chiropractic care have anomalies
present on spinal radiographs. Further research and analysis is
necessary to investigate the risk-verses-benefit ratio of spinal
radiographs for chiropractic patients... |
|
| January 13, 2005 |
| |
Reasons for Revision Hip Surgery: A Retrospective Review
- Clinical Orthopedics and Related Research |
|
|
The purpose of this
study was to determine the indications for contemporary revision hip
surgery in a consecutive series of patients. We retrospectively reviewed
the clinical records and radiographs of 439 revision hip surgeries done
between 1996 and 2003. Fifty-five percent of the surgeries were for
aseptic loosening, 14% were for instability, 13% were for osteolysis
around a well-fixed implant, 7% were for infection, 5% were for
periprosthetic fracture, 3% were for conversion of a hemiarthroplasty,
1% was for psoas impingement, 1% was for loose recalled implants, and 1%
was for implant fracture... |
| January 12, 2005 |
| |
Arthroscopic Findings in Chronic Lateral Ankle Instability
- American Journal of Sports Medicine |
|
|
There were no
significant differences in the clinical and radiologic results between
patients with chondral lesions and those without chondral
lesions...Conclusions: Reconstruction of the lateral ligament can be
successful regardless of the presence of focal chondral lesions in
patients with chronic lateral ankle instability when preoperative
weightbearing radiographs of the ankle do not show any joint space
narrowing... |
| January 11, 2005 |
| |
Intercondylar Notch Stenosis Is Not a Risk Factor for Anterior
Cruciate Ligament Tears in Professional Male Basketball Players
- American Journal of Sports Medicine |
|
|
Conclusions: The notch
width index did not predict the rate of anterior cruciate ligament
injury. A level of critical notch stenosis was not detected. Anterior
cruciate ligament injury could not be predicted by the absolute
measurement of the femoral inter-condylar notch. Use of a
preparticipation notch view radiograph in male professional basketball
players as a predictor of anterior cruciate ligament injury is not
recommended... |
|
| January 10, 2005 |
| |
MR Imaging of Diabetic Foot Infection
- Seminars in Musculoskeletal Radiology |
|
|
Infection of the foot
is common, especially in the diabetic population. Over the past decade,
magnetic resonance imaging (MRI) has become a 'gold standard' for
evaluation of pedal infection. Therefore it is important for the
radiologist to understand the MRI appearance of various manifestations
of infection as well as conditions that may simulate infection,
including neuropathic disease... |
| |
Imaging of Posttraumatic Osteomyelitis
- Seminars in Musculoskeletal Radiology |
|
|
Posttraumatic
osteomyelitis frequently leads to an illness characterized by chronicity
and recurrences. Bone changes themselves, developed during chronic
infection, and orthopedic implants heavily influence the diagnostic
value of the different imaging methods. Conventional radiography remains
the cornerstone of imaging of acute and chronic osteomyelitis, but other
modalities such as ultrasonography, radionuclide studies, computed
tomography, and magnetic resonance imaging may be necessary. The values
of the techniques in different clinical settings are described...
|
| |
Imaging of Osteomyelitis with Special Reference to Children
- Seminars in Musculoskeletal Radiology |
|
|
Infection of bone in
children represents a diagnostic and therapeutic challenge to the
pediatrician, the surgeon, the radiologist, and the pathologist. The
pattern of manifestation varies and is dependent on the site of
involvement, the initiating event, the infecting organism, and the acute
or chronic nature of the illness. Early diagnosis allows prompt
treatment, which can prevent many of the dreaded complications of this
disease... |
| January 07, 2005 |
| |
A comparison of 4 common methods of hand-measured techniques
with a computerized technique to measure the first intermetatarsal angle
- Journal of Foot & Ankle Surgery |
|
|
Measurement of the
intermetatarsal (IM) angle on plain dorsoplantar radiographs is
considered a standard in the surgical evaluation of hallux valgus. The
angle formed in this measurement helps determine the selection of
surgical procedure. A study was performed to determine the most
consistent method to radiographically measure the first IM angle. The IM
angle was measured manually with a tractograph by using 4 different
techniques on 50 preoperative dorsoplantar radiographs...
|
| |
Assessment of outcome in ankylosing spondylitis: an extended
radiographic scoring system
- Annals of Rheumatic Diseases |
|
|
The mean change in the
cervical and lumbar spine scores between weeks 0 and 48 of all patients
was 1.45 and 1.06, respectively. Change in radiological score was seen
in 36/57 patients (lumbar and cervical spine 11, cervical spine 12,
lumbar spine 13 patients)...Conclusion: The mSASSS is useful for
assessing extensive radiographic damage in AS. It is reliable, detects
changes over 48 weeks, and shows a satisfactory face and construct
validity... |
|
| January 06, 2005 |
| |
A Systematic Approach to Magnetic Resonance Imaging
Interpretation of Sports Medicine Injuries of the Knee
- American Journal of Sports Medicine |
|
|
Magnetic resonance
imaging is performed more commonly on the knee than on any other joint,
and it is an excellent diagnostic tool that can aid in the evaluation of
a host of sports-related injuries involving the ligaments, tendons,
menisci, osseous structures, and articular surfaces. A thorough
evaluation of the images, however, can be a daunting task, as the study
often contains dozens of images obtained with multiple pulse sequences
and in several imaging planes... |
| |
The influence of slice thickness on the volume measurement
accuracy of 3-D MR reconstructions of acrylic phantoms: a precursor to
knee imaging -
Radiography |
|
|
Conclusion: The results
of this study support the accepted inverse association between slice
thickness and volume measurement accuracy. If a 5% level of PME is
considered acceptable, the findings suggest that slice thicknesses of
3.0 mm or less be employed where analysis of lesions estimated to fall
within a volume range of 1000¿20,000 mm3 is being considered...
|
| |
Chronic Recurrent Multifocal Osteomyelitis
- Seminars in Musculoskeletal Radiology |
|
|
Chronic recurrent
multifocal osteomyelitis (CRMO) is often diagnosed by exclusion of the
two main differential diagnoses-bacterial infections and tumor-by
assessing for a characteristic course and the findings by conventional
radiography, if necessary supplemented by scintigraphy and/or magnetic
resonance imaging (MRI). The MRI appearance of CRMO lesions in tubular
bones and the spine is often rather characteristic and support the
diagnosis. It is important to diagnose CRMO to avoid unnecessary
diagnostic procedures and initiate an appropriate therapy... |
| January 05, 2005 |
| |
Radionuclide Bone Imaging in Erdheim-Chester Disease
- Clinical Nuclear Medicine |
|
|
Erdheim-Chester disease
is a rare sporadic systemic histiocytic disease of unknown etiology that
routinely involves the diametaphyseal region of the long bones of the
appendicular skeleton. In addition, there is frequent involvement of
multiple internal organs producing protean manifestations. Although
definitive diagnosis requires histopathologic confirmation, its
appearance on bone scintigraphy is virtually pathognomonic of this
entity... |
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